Positive and negative symptoms

Symptoms of schizophrenia are sometimes divided into positive, such as delusions and hallucinations, and negative, such as poverty of thought and speech, lack of initiative, social withdrawal, slowness, unreliability, and poor self-care. Positive symptoms are prominent during acute episodes; negative symptoms are characteristic of the chronic stage.

A more recent subdivision of symptoms describes three groups: reality distortion (that is, delusions and hallucinations), disorganization (that is, disruption of the connection between thoughts, formal thought disorder), and psychomotor poverty (that is, negative symptoms).

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